cordt



Ma 23, 1933. H, CORDT ,910,201

CALGULATING MACHNB l 1ed Aug. 9, 1929 6 SheetSSheet 1 May 23, 1933. H. coRDT 1,910,201

cALcULATING MAcHNE Fi1ed Ang. 9 1929 6 SheetSSheet 2 y 3, 19330 H. coRDT L cALcULATNG MAcHINB Filed Au 9 1929 6 SheetsSheet 4 Patented May 23, 1933 UNITED STATES 1,91D,zo1

PATENT oFFICE 11 lication iled n nst 9, 1989, seTial Cation nd diviSion, it is frequently deSifed dufing InIllti lying o erationS eitheI to print the 1'eSLllting rodnotS of the 1T111lti lioandS of Tnulti lierSoIn loyed nd to odd theIn, 01' further to )rint all three nunlberS and to dd one of oll of theIn, the SaI1e applying in t11e fevorSe SenSe Tvhen dividing in the oaSe of quotientS, dividendS and divisors. The f111fillInent of this fequireInent doeS I1ot offeI any diHioulty theoretioally, iI12LS1T1I1ofi as it iS only neceSsoTy to odd to the nlultiplying Inacl1 ine or t11e Inachine for 11 four kindS of oalonlation, the oorreS onding pT1nting and adding ITleo11aI1iSInS. In praofice, hovv eveI' oonSiderble diffioultieS ariSe S is ploved by 11 the hitherto knovvn proposols. In these fo oSed conStruotionS al Se ofate finfing InechaniSn1 having itS ovvn trns n1isSion device is pfovidod fof the In111tipliond, the II1tllti )lier and the I'eSI11t, In con- Sequenco of thiS the Inchine iS, hovvever, rendefed So coIII lioated and iS So expenSive in Inanufaotnre that for thiS feaSon lone it iS 11ot oonlpetitive. 1L1)art froII1 thiS the InaohineS conStrncted aocofding to theSe knOWn ro OSalS connot poSSibly vVork Te liabl inasInuch aS the numbers Shovvn in the Calolllating Inachine foI' 11 four kin(1S of Calculotion and the rinting InechaniSIn afe located So fr a art fl'oII1 one anothef and LI'o s() offnged tht the oonneotion be t een t11e tyvo neceSSitteS a large nuInber of linkageS, S11afts and raokS, vvhioh In11St of neoeSSity ha ve a certoin aInount of ploy f their oonnecting pointS, vvhich lay adds itSelf together nd at the end of fhe tI LI1S n1iSSion gives riSe to falSe indioatioI1S. 4

It iS the pfinciPal obiect of the C1oI11t in Inaohine fofIIling the SI1biect of the preSent invention fo remove theSe drW- book The invention conSiStS eSSenti1ly in the CoI]])intion of o oolculoting In chine fo1' perfoTming fonr kindS of caloulation i. e. ddition, Subtraotion, In111ti 1ic tion hd diviSion, or a In111tiplying Inchine having i11dividnal hand of II1otoI dfive and 3s,57o and i11 oetman An nst 17, 1928.

a prinfing, adding nd Subtracting nlachine vvith one or Inore Counting II1echniSInS and itS own hand of Inotor dfive, Whioh latteI' is not pfovided vith a keyboa d nd oI1 the operation of its (1I'ive t1{eS off the v1nes to be finted oI to be oa1o111ted fro111 I111II1- ber IneInberS vvhich Set theInselveS I1P coI, reS ondingly on the o eTtion of the oalo11 lating ITlaofline fof foI11 kindS of o9dlcl11 tion, of the II111ltiI)lying Inchino S the oaSe IIlay be. In thisInonneI' tronSInisSion de vices in vvhich the unvoidble play betvveen the aTtS adds itself u re eS eoially avoided.

In the ocoII1 )anying dravvingS the eSSen tial )rtS of a calonlating Inohine foI' four kinds of caloulation and an adding IIlaohine arranged behind the fofIneT ore Shown by vvay of eXanlple, aooofding to the inventio11. 7

BefeTring to the dravvingS= ig. 2 iS on e1evation,

igs, 3 to 7 Shovv vafious positio11S of the feeling memberS of the adding nloohine in Sh0vi1g the ooupling of the dfive of the adding and Subtracting Inachine Tvith fhe dTive of the calotllating Inaohine for fo11I' kindS of oalolllotioI1.

ig. 10 ShovvS a deti1 of ig. 9 in fl'ont view,

igs. 11 fo 16 Shovv (1ifferent positionS of the oonpling ITleohaniSn1 in e1evtion and )laI1,

ig. 17 iS an olevation of the locking de vice of the drive of the dding Inaohine,

ig. 18 iS aJ detail of the locking devioe iI1 plan, and

The refefenoe nuInefal 1 denoteS the key bord of the calculating Inohine foI' four kinds of oalonlation. keyS 1oooted behind one onother in a rov, a baT 2 iS arranged vvhich on de reSSion of key is diS Iced in knovvn nlanner s11oh a that disolose(1 in the T. S. 1. ]atent Speoification To. 1,89,57, tho di5P1oeII1ent being 100 Tnder each of the Slidably 111ollnted rod 36, Which thereby iS preSSed dovvnvvfd aooording to the heigl t of the proiection againSt the ctiOI1 of S rlng.

. The loWer end of the Tod 36 iS ivotally Inounfed on an arn1 37 of 5 Shft 37, furthef arn1 375 iS connecte(1 by nleanS of a 1)ull rod 38 fvith one rn1 of a bell orank leve1' 39. The other arIn of thiS be11 ofnk lever 39 iS conSf ncted in the forln of fofk an(1 enoloSeS 5 pin Inounted on the loWer Side of the Setting baI' 15. By nleaoS of thiS Hnkage the lnovement impafted to the rod 36 transn1itS itSelf to the Setting b5I' 15, hioh thuS afteI, the printing of a PortiCl 15r denoInination of nulnberS iS allton1at1- oa1ly brought into the PoSition for tking off 5nother denon1ination of n11InbeI'S.

The 3(1(1iI1g IneohaniSIn 50 shown in the drawingS natufally addS only the itelns of one individnalCle110111ination of I1]1111bers, fol' exaInple, only the lnulti licandS or divi dends, the II1llltiI)lierS of (1iviSors, oI' the prodnotS of qllotients. or thiS feaSon, the adding Ineoha 1iS1n 50 iS Inonnted pivotally on aJ Shaft 500and can be bfought in and out of engagemeht With the aokS 10 It ou1d, of ooI1rSe, 1So be )oSSible to eIn loy one of the known adding InaohineS having a luralify of ooIInting InechniSn1S So that the nuInbefS of all the denoIninationS Cou1d be added. The adding IIleohaniS1T1 Conld nloreover be connected With rinting n1echaniSln in ordef to pl'int the tot1S.

Moreovof, it iS desir5ble, for inStance, in the CalCn15tionS of eleofrioity vorkS regarding the ouffent conSuInPtion of the individ 11a1 consun1erS to I)I'int the nuInbel' iInPfeSSed on the keyboafd and 5180 fo let it o pef on fhe nIln1beI' rollef 1 indioating the roduCt,

in order to be fufthef eIn loyed for the ca.1 Culation in the caloulating Inaohine for 511 fouf calculations. If iS deSir5ble to be able to eifect thiS adinStlnent by tho actuation of a Single hnd lever. ThiS res111t CLn be ttained by arraJnging that in the n]iddle )oSi tion of the setting bar 15 the hand lever H of the adding Inachine is So couplod vvith the Shaft oaTrying the ofank I of the CLl oIllating nlachine foI 311 fo11r caloulations, fhat the latter cafrieS out 5 coInpleto revolI1- tion vhen the hand lever H iS opeT5ted. 1

- Suitble InechaniSIn of thiS kind iS Shown in igS.- 9 and 17. In thiS construction the Shaft 150 ofrying the ornk K of the calcu15fing lIiachine for all four o erationS iS ConneCted by IneanS ofpairs of beve1 vv11eelS 51 and 52 ositively to veftical Shft 53 on Whioh a S ur Whee15 iS fixe(1. ()pposite to the S )11I' vvheel 5 5 rack 55 iS located.

round a hol(1ing sofevv 57. S ring 58 n1Hint ns the r5ck 55 in the )oSition of reSf outside of the range of f=11e s )111' vheel 5 Abo o the Tack 55 fixedly oI' )ivot1l nounted ona Screvv 59 5 1ever 60 is located fhe Slide 56 5 forked bearing block iS HXed. In the fork of thiS bearing block CTfief I)in 67 1T1ollnted on a leveI' afn1 66 of the Shaft of the rinting lever 11 enggeS vhich haS n1 le lay in the Sid reoeSSed poftion and tranSInitS the Inovelnenf of the printing lever fI to the slide 56 vifh a I'e tardtion Whioh is deterInined by the ply 'or the oontrol of the 1oller leveI' 60 a co11 frol diSc 68 Whioh is 1ikeviSe fixed on the Shaft of the leveI' H Sefves, vvhich iS pro vided vvith tvo inolined SuI'faceS 68o, 685. On the hUb of the Said control diSo feeling lever 69 is lnonnted So as to be loosely ro tat5ble, vhich feeling level' iS ooupled vvith the oontrol diSo 68 by lneanS of the tenSion S )ring 7 0, Tvhich dravS the leveI 69 againSt H in 71 of the contfol diSo 68 (I ig. 9). ()n fhe feeling lever 69 n inclined SIlrface 69o iS pfovided vhiCh 11en the levef 69 I'eStS on the pin 71, for1T1S the extension of the in cliIled Surface 68C on the contfol diSc 68. vVhen the hand leveI' H InoveS tovrdS the left in ig 9 t11e contfol diSc 68 iSoarfied ith it on(1 through the InediI11n of the S 1ing 70 1ikeviSe crrieS the feeling leveI' 69 ith it. 1)I1l ing this n1ovenlent the ffont end 695 of the feeling lever StfikeS fI'oIn be lov ag5inSf the Setting b51, 15. 1 he oint af vhioh the feeling lever 69 strikeS ag5inSt tho Setting baI 15 n5tur5lly diffefS aoCor(1- ing to the oSition taken u by it. ofre S onding to the three given ositionS of the setfing ba1' 15 there Wil1 be thfee 1)ointS of oontact lying odjacent to one another. In the tvo outer PointS of contcf the Setting ba1'S 15 eaoh carry 5 Proiection 71 and 11Ch afe so high th5t they h5rdly 1l0v tho feeling leve1' 69 ny 1)osSibility of rotation. f, hovvever, the Sefting ba1' 15 iS in the nliddle position, then the feeling leve1' 69, the front end of which on lnoving into the reCeSS 72 engageS beteen the ProjeCt onS 74 and 75, oan effeot Such a 15rge Inovelnent that ifS inclined SI11f5oe 69o iIn alfS a rot5tory n1oven1ent to the roller lever 60 thfongh the 111eClil111i of the foller 62. Gon Sequently, the roller 62 Slides 11 )on the in clined SurfCe 68( of the Control diSc 68, f1ich 15tter inaSInnch as it PartiCiPateS in fhe forWard InoveInent of thopr nting lever I oSitively iIn )artS to the roHer lever 60 a Sf il1 greater rotatory n1ove111 ent. Consequently, the I'olleI' 61 Co111es into contHCt vith ginSt tho action of the SPTing 58 ig- 12).

1t this IooInent the Carrier I) n 67 haS Colnleted ifS idle ath, engageS in the Sli(le 65 and II1oves the Slide 56 and conSequently the 4 fack 55 forvrds. The folle 61 InaintoinS the Tack conStantly iI1 enggefnent vvith the S ur whee1 51 WhilSt the foHe 62 S11deS a1ong the fear Sufface of the confrol diSo 68 (E i ..12). 1)uring the forWard n10ve111ent of to Sli(1e 56 the shaft 53 5nd ConSequent1y the crank Shaff 150 iS rofted by 1neanS of the r5ck 55 and the s )ur vhee1 5. 1 1t the end of the for-ard 11ove111ent of the rinting l Contro1 (liSc and Sli(1eS nov nnder the aC- fion of the teI1Sion S fing 63 off the Confro1 diSC 68 and a )1)1ie5 itSelf to the inC1ned suf fnCe 695 of the feeling lovel' 69 (1 ig. 1). During thiS oPerofion the fo11e1' 61 fele5SeS the r5ck vhich undefthe nCtion of the Spring 58 Snn S oIlt of engngelnent With the SPuf *heel 51. 1)[IIing the SnCCeeding baCk 1r(1 move111ent of the )rinfing leve1 11 fhe Slide 56 fogethel' With the rack 55 feturnS into fhe OSition of feSt vithout rotating the SPur 'hee1 51. The rol1el' 62 of the ro1leI levef is fhereby 1)1'eSSed by the inclined surface 686 of the control diSc 68 Sti11 further fovrdS the inClined Sofface 69(Z of the feel ing 1eveI' 69 and slideS along the ffont Surfaco of the contl'ol (1iSc 68. 1he 1'oller 1evel' 60 thIS fefnrnS to ifS poSifion of foSt 50 that aftel' the rinting leye 11 hHS been =oInpIetely paSSed back, the )oSition Shown 1n Fig. 9 iS again eStabliShed. on 5 fnrthef ork1ng Stfoke of fhe l)1'i lting 1ever H and fith the SaIne position of the Setting bar 15 the above deSoribed oPeration ,onld reI)eat 1fSelf and the Ca1culating ofank K vou1(1 execute 5 further fotation. ()n the ofhef hand, if the Setfing bar 15 iS So Set by the )aI)e1 caffiage 31 that the.ProieCtion 696 of the fee1n lever 69 reStS be1ov the pfoioC tion 7 (1 igS. 10 and 16) of 75, then the couP1in does not enter into oI)eration, Since aS olfeady 11e11fione(1 111 thiS CaSe the feeling 1ever 69 cannot execute any SubStantia1 ro tItory nove111enf 5n(1.in thiS CaSe on1y t11e S ring 70 Wonld be tenSioned (I ig. 15)- The Slide 56 and the rook 55 vi11 execufo their 1noveInontS dI11'ing the fofW-5rd and back'ard n1ove111ent of the printing lefer 1I,

but theSe latter do not exert any effect on the lnachine inaSn1nch as tho couPling iS inop orofive.

In the carrying ont ofthe nlu1ti lication and diviSion operofionS in the calou13ting I fohine foI' 511 fou1' kindS of ca1culation the counting InechaniSn loto 3 is, aS is ve11 knoWn, pnShed tronSyefSely into the In5- Chine. 11fte1' the concluSion of the c51cu1 fion fol' the deterIninfion of the individu51 ordef to t5ke up the adiuStInent fof the deci In51 point. The adinStInent to the decinlal )oSition wiH be hereinaftef deScribed aS tho (1ecilnal Posifion. 11 11611 colc1115ting quick1y, it hap enS, hovever, fhat the c51onlHto1' inadvertently negleotS to 1)I'i11g the feSnlt nlechnnisn1 3 i11t() the (lecinlal poSition be fore opefoting the leve1' 1. Ie ill f11IIS tranSInit the reSn1t 111 the falSo 1)oSition of the reSu1t InechaniSIn and ConSequently win obfain at the e11(1 of the calonlation 3. falSe reSult. In o1 (1ef fo rendef thiS i111l)OSSible 5 Separate locking (1evice iS rovided 11ich is illI1 tf5fed in igS. 17 and 18. In thiS 1ocking device 1'i(1erS 78 are 6xed on one of fhe Side SurfaCeS of the Cove1' of the fe- SI11f llleC115niSIn 3 (Fig. 17) by lneanS of n1illed sCre-S 77, l1iCh fiderS ofe )fovided on both SideS ith inClined SnrfaCeS. TheSe fiders 78 Control dnring fhe n1ovonlent of the reSult n1echanisln 3 5 t oarn1ed lever 7 9 11ich iS ivotaHy n1onnted 011 fhe InoChino fhe acfion of a fenSion Spring 83.

If one of the riderS 7 8 runS over fhe ll )1)er end of the leve1' 79, fhen thiS 1atfe1 -il1 bo 1)reSSed do'n and fhe lever ill bo S'nng abonf ifS pivof So fhat if vitl1(1ra S the 1oCk ing S1i(1e 81 againSt the acfion of the S )1'in 83. I)uring thiS operntion, a laforal reCoSS 81o provided in the SHde 81 oomeS into )oSifion in the courSe of n1otion of 5 )in 86(Z, l1ich iS oarried by In arln 86 of fho Shnft tnrned by the hand 1ever11 and ,11iCh 1)roiecfS 5 Shorf diStanCe ove1 the1ooking Sli(1e 81.- In thiS initia1 oSition of the locking Slide 81, thiS 1atter prevenfS the rofafion of fhe hond levef Shaft. inaSInnoh aS the )in 865 StrikeS u on it. The free noven1enf of the hand 1e veI Shaft iS only oSsible -11en the l)in 865 can enfer into the receSS 815. The hand 1e ver I 1 onn thuS only be opernfed 11en fhe counting mechanisn1 plate 3 occupies Such o )oSition fhat one of the riderS 7 8 diSp1acoS (i. e. S*ingS) the leve1' 79. 1y Suifable Setting 111) offhe fiders 78 on fhe cove1 76 of the countin Inechanisn1, operation of t11o hand 1ever 11 iS on1y poSSible in the deoiIn51 )oSition, So fllat 5 f81Se reSulf Can never bo printed. It iS neCesSary to Provide Sovern1 ri(lers 78, inaSInuch aS Severnl ro S of nnn1 berS have fo be v1'iften one beSide the ot11er eaoh of vvhioh poSSeSSeS 5 Se arate deciInal poSifion. If, in addition to the hand levor I, the n1nohine iS 5180 rovided vith an e1oC t1 ic C1rive npon aotuation of 11ich the hnn0 1ever reInainS at feSf, the 1ooking b51' 81 can a1So be enlployed foI' 1ocking the nofol' key 8. The Inotof key 8, gener5Hy reSSed I1) vardS by ITleanS of 8 Spring 96, iS fovided as l1Su1 vvith an ofIn 8o by nleanS of *11ich 

